COMPOSITE OF STEEL SHEET AND FIBER-REINFORCED RESIN, AND METHOD FOR MANUFACTURING COMPOSITE OF STEEL SHEET AND FIBER-REINFORCED RESIN

Title:

COMPOSITE OF STEEL SHEET AND FIBER-REINFORCED RESIN, AND METHOD FOR MANUFACTURING COMPOSITE OF STEEL SHEET AND FIBER-REINFORCED RESIN

Document Type and Number:

WIPO Patent Application WO/2022/014587

Kind Code:

A1

Abstract:

[Problem] To realize superior perpendicular peel strength while maintaining shear peel strength. [Solution] The composite of a steel sheet and a fiber-reinforced resin according to the present invention comprises: a steel sheet material formed from a steel sheet or from a molded body of the steel sheet; a first resin layer positioned on at least part of the surface of the steel sheet material, the first resin layer including, as a main component, a resin composition of two different types of materials; and a second resin layer positioned on at least part of the surface of the first resin layer, the second resin layer being configured from a fiber-reinforced resin in which strong fibers are included in a matrix resin. The resin composition of the first resin layer contains a phenoxy resin and a polyester elastomer within a range of 20:80 to 80:20 in terms of mass. In an elastic modulus phase image in a plurality of discretionary 10-μm-square regions, said image being obtained by observing the resin composition through AFM such that a probe having a distal-end radius of 10 nm is mounted in an atmosphere at 25°C, the area ratio of a location at which there is formed a phase separation structure originating from the phenoxy resin and the polyester elastomer is 1 area% or less.

Inventors:

KOORI MASUMI (JP)
UEDA KOHEI (JP)
KOGA ATSUO (JP)
NEGI NORIYUKI (JP)
IBARAGI MASAHARU (JP)
YOSHIOKA TAKAHIRO (JP)
TAKAHASHI HIROYUKI (JP)

Application Number:

PCT/JP2021/026281

Publication Date:

January 20, 2022

Filing Date:

July 13, 2021

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)

International Classes:

B32B15/08; B32B15/18

Domestic Patent References:

WO2019132042A1	2019-07-04
WO2021090820A1	2021-05-14
WO2020213698A1	2020-10-22

Foreign References:

JPS6131247A	1986-02-13
JPS50143880A	1975-11-19
JP2020055144A	2020-04-09

Other References:

M. GATZTELUMENDI: "PHENOXY/HYTREL BRENDS. II. DYNAMIC AND TENSILE PROPERTIES OF UNREACTED MISCIBLE BLENDS", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 72, 1 January 1999 (1999-01-01), US , pages 85 - 93, XP009533236, ISSN: 0021-8995